Add PrimeCheck algorithm in Java

[manikonda-anjali]

Implemented a simple algorithm in Java to check whether a number is prime or not.

• Added a new file: PrimeCheck.java in src/main/java/com/thealgorithms/math/
• The program defines a function isPrime(int n) that checks for primality.
• Included a main method to test the function with sample input.

This implementation follows Java naming conventions and contributes to the Math algorithms section.

• I have read CONTRIBUTING.md.
• This pull request is all my own work -- I have not plagiarized it.
• All filenames are in PascalCase.
• All functions and variable names follow Java naming conventions.
• All new algorithms have a URL in their comments that points to Wikipedia or other similar explanations.
• All new code is formatted with clang-format -i --style=file path/to/your/file.java

[codecov-commenter]

Codecov Report

❌ Patch coverage is 0% with 10 lines in your changes missing coverage. Please review.
✅ Project coverage is 78.32%. Comparing base (bb6385e) to head (3819941).

Files with missing lines	Patch %	Lines
...c/main/java/com/thealgorithms/math/PrimeCheck.java	0.00%	10 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #6993      +/-   ##
============================================
- Coverage     78.35%   78.32%   -0.04%     
- Complexity     6615     6616       +1     
============================================
  Files           746      747       +1     
  Lines         22015    22025      +10     
  Branches       4320     4323       +3     
============================================
+ Hits          17249    17250       +1     
- Misses         4078     4088      +10     
+ Partials        688      687       -1     

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[github-actions]

This pull request has been automatically closed because its workflows or checks failed and it has been inactive for more than 14 days. Please fix the workflows and reopen if you'd like to continue. Merging from main/master alone does not count as activity.